Impact turning tool

ABSTRACT

An impact turning tool comprising a rod, a handle at one end of the rod, a turning implement at the other end thereof, an abutment fixed to said rod adjacent the turning implement, said abutment having a generally V-shaped impact surface which extends away from the turning implement toward the handle; and a weight or impact member slidably and rotatably mounted on said rod, and having a V-shaped surface complementary to the V-shaped surface on the abutment.

United States Patent [191 Bolger May 21, 1974 IMPACT TURNING TOOL [76] Inventor: Joseph Bolger, Summer St., Barre,

Mass. 01005 [22] Filed: Aug. 28, 1972 [21] Appl. No.: 283,910

[52] US. Cl. 173/93.7, 81/523 [51] Int. Cl B25d 15/00 [58] Field of Search 173/93], 91, 90; 8l/52.3, 8l/52.35; 287/5208, 53 TK [56] References Cited UNITED STATES PATENTS 2.833173 5/l958 Aspeek l 173/931 2506,49] 5/1950 Boisblanc 287/5208 X FOREIGN PATENTS OR APPLICATIONS 511,547 8/l939 Great Britain 173/937 Primary Examiner-Henry C. Sutherland Assistant Examin'erWilliam F. Pate, Ill Attorney, Agent, or FirmCharles R. Fay

[ 5 7] ABSTRACT An impact turning tool comprising a rod, a handle at one end of the rod, a turning implement at the other end thereof, an abutment fixed to said rod adjacent the turning implement, said abutment having a generally V-shaped impact surface which extends away from the turning implement toward the handle; and a weight or impact member slidably and rotatably mounted on said rod, and having a V-shaped surface complementary to the V-shaped surface on the abutment. 1 v

7 Claims, 4 Drawing Figures IMPACT TURNING TOOL BACKGROUND OF THE INVENTION I SUMMARY OF THE INVENTION This invention comprises a rod, a handle at one end of the rod, and a turning implement such as a socket wrench, screw driver, or the like at the opposite end thereof, and an abutment in fixed relation with respect to said rod and located adjacent the turning implement, said abutment having an inverted V impact configuration at the side surface thereof facing the handle i.e.,-

away from the turning implement, the abutment ex-' tending to both sides of the rod, together with a relatively heavy impact member slidably and rotatably mounted on said rod and operable under the influence of the hand of the operator, said impact member having an inverted V shape indented construction complementary to the V-shape conformation of the abutment.

The operator turns the impact member slightly off center with relation to the apex of the abutment and lets it fall or brings it down by hand in such a way that not only is a heavy impact applied to the memberto be turned through the rod, but also a turning motion in the desired direction iseffected dependingupon the direction of offset of the impact member with respect to the abutment.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view in elevation illustrating the tool; FIG. 2 is a view in elevation looking along arrow 2 in FIG. 1;

FIG. 3 is a partial view which illustrates the device in use; and

FIG. 4 is a sectional view through the abutment illustrating a modification.

PREFERRED EMBODIMENT OF THE INVENTION A rod 10 is provided at its lower end with some means for turning nuts, bolts, etc., as for instance a detachable socket 12. This could also be a screwdriver or any other device. A short distancefromthe turningimplement 12 there is a solidabutment 14. This abutment is rigidly mounted on the rod 10 and is provided with an inverted V-shaped impact surface 16 and 18 which extends transversely of the rod as shown in FIG. 2.

The other end of the :rod may be provided-with any kind of handle desired such as the crosspiece 20, and slidably and rotatably mounted on the rod there is a heavy impact implement generallyindicatedat 22. This implement is preferably cylindrical and its main novel feature resides in'the fact that, at its under surface it has a V-shaped impact conformation as at 24.and 26 conforming to the angles of the impact surfaces at 16 and 18. It also may be provided with finger gripping grooves 28 if desired.

The impact implement 22 is loose on rod 10 and is easily turned and slid alongit. The tool may be used vertically or at any angle with respect thereto but of course when it is used vertically there is the extra force of gravity on the abutment.

In the use of the device the handle 20 may be held with one hand and the impact implement 22 with the other hand. The impact implement 22 may be merely moved along the rod to apply an impact to abutment l4 and thereby to loosen the fastener or other member which is to be turned.

However, by indexing the impact implement slightly a condition is provided as shown in FIG. 3 wherein the surfaces 24 and 26 are not quite aligned with surfaces 18 and 16. Under these conditions when the impact tool moves along the rod 10 to strike the abutment 14,

it tends to thereby also index abutment l4 and rod 10 and therefore the turning implement 12. In the condition shown in FIG. 3 the rod and the turning implement 12 will be moved not only axially of the rod but rotationally thereof, in this case in a counterclockwise direction thereby tending to turn off the bolt, nut, screw, or' other member which is being operated upon.

The V-surfaces 1'6, 18, 24, and 26 need not be flat and need not be inverted, as any complementary surfaces that will accomplish the purpose may be used, and'especially the generally V-shaped surfaces may be inverted from the relation shown in the drawings.

As shown in FIG. 2, there is a looseness between the handle 20 and the barrel 30 in which it is located for the purpose of allowing the rod 10 to turn as the impact takes place, without however causing much of any turning motion of the handle. Also, a fixed cylindrical abutment 32 may be mounted onrod 10 at its lower end, and a spring 34 inside the impact tool is in line therewith to provide aloose connection for the purpose stated, making the action easier for the user.

FIG. 4 illustrates another way to achieve looseness between :the rod 10' and the solid abutment 14'. In this case the rod passes through the abutment in bore 36 and a pair of opposed tapered bores 38, 40 cross the bore 36. A pin 42 is'driven into the rod 10' and this pin therefore has a very loose connection relative to the abutment 14', allowing the latter to turn when struck without turning the rod or its handle. Thus, only the driven member, the abutment I4, is rotated.

I claim:

1. An impact turning tool comprising an elongated rod, means at one end thereof for turning an object, an abutment secured to said rod, said abutment having in general two surfaces at angles with respect to each other,

an impact implement slidably and rotatably mounted on said rod and having impact surfaces comple- 1 mentary to and facing those on the abutment, said impact implement being adapted to be moved along the rod to strike the abutment with said impact surfaces in misalignment so that the impact implement provides an impact force on the abutment and therefore on the rod and also tends to turn the "rodand'the object turning means,

a handle atthe other end of the rod from the turning means, and means loosely securing the handle to the rod.

2. The impact turning tool of claim 1 wherein said impact surfaces on the abutment and on the impact implement are essentially planar and V-shaped.

6. The tool of claim 4 wherein said means comprises a cross pin on the rod and an enlarged recess on the abutment accommodating the cross pin.

7. The tool of claim 6 wherein the cross pin extends out at both sides of the rod and the recess comprises a pair of opposed tapered bores for the cross pin. 

1. An impact turning tool comprising an elongated rod, means at one end thereof for turning an object, an abutment secured to said rod, said abutment having in general two surfaces at angles with respect to each other, an impact implement slidably and rotatably mounted on said rod and having impact surfaces complementary to and facing those on the abutment, said impact implement being adapted to be moved along the rod to strike the abutment with said impact surfaces in misalignment so that the impact implement provides an impact force on the abutment and therefore on the rod and also tends to turn the rod and the object turning means, a handle at the other end of the rod from the turning means, and means loosely securing the handle to the rod.
 2. The impact turning tool of claim 1 wherein said impact surfaces on the abutment and on the impact implement are essentially planar and V-shaped.
 3. The impact turning tool of claim 1 wherein said impact surfaces both on the abutment and on the impact implement are planar and of general inverted V-shape.
 4. The tool of claim 1 including means forming a loose connection between the rod and the abutment.
 5. The tool of claim 4 wherein said means includes a spring between the rod and impact element.
 6. The tool of claim 4 wherein said means comprises a cross pin on the rod and an enlarged recess on the abutment accommodating the cross pin.
 7. The tool of claim 6 wherein the cross pin extends out at both sides of the rod and the recess comprises a pair of opposed tapered bores for the cross pin. 